sk8rseth, I think you're GPS isn't on. You may want to try a primer, GPS Viewer for example. There, you can set the COM, should be COM4, and baudrate 4800. Open GPS, and I'd do a cold start. If you see the tool, it real easy.
Anyway, try that, leave it on, then try gps speedo. Haven't used that myself, so I'm just guess actually.